<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script type = 'module'> 
    // import {接收值} from "地址"
    // export 导出
    
        import {a,b} from './js/a.js';
            console.log(a,b);
    //    add();








    </script>
</body>
</html>